— 藥理與非經腸給藥 · EASY · MCQ —
一位心衰竭病人被開立速尿靈（furosemide）。給藥前，護理師應優先評估哪項數值？
A client is prescribed furosemide for heart failure. Which assessment finding is most important for the nurse to prioritize before administration?
- ARespiratory rate呼吸速率
- BSerum glucose level血清葡萄糖濃度
- CSerum potassium level✓ 正解血清鉀離子濃度
- DBlood pressure血壓
— Explanation · 中文詳解 —
速尿靈（Furosemide）屬於環利尿劑（loop diuretic），會抑制腎小管對鉀離子的再吸收，導致鉀離子隨尿液大量流失。低血鉀（hypokalemia）不僅會導致肌肉無力，更會顯著增加心臟對毛地黃（digoxin）的敏感性，引發嚴重的致命性心律不整。因此，給藥前確認鉀離子濃度是極為重要的安全評估步驟。
Furosemide is a loop diuretic that inhibits the renal tubular reabsorption of potassium, leading to significant urinary potassium loss. Hypokalemia not only causes muscle weakness but also markedly increases the heart's sensitivity to digoxin, precipitating serious and potentially fatal arrhythmias. Therefore, verifying the potassium level before administration is an extremely important safety assessment step.